<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./Day2.css">
</head>
<body id="body">
    <button id="btn">我是按钮</button>
    <button class="btn">我也是按钮</button>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
    </ul>
    <form>
        <input type="text" id="text">
        <input type="submit" name="#" id="submit">
    </form>
    <a href="#" id="a">链接</a>
    
    <div id="vital" 
    style="background-color: rgb(255, 0, 0);
    height: 100px;
    width: 100px;
    position: absolute;">
    </div>
    
    <script src="./Day2.js"></script>
</body>
</html>